Merge branch 'ah/doc-interpret-trailers-ifexists' into maint

Documentation fix.

* ah/doc-interpret-trailers-ifexists:
  Documentation: fix reference to ifExists for interpret-trailers

Documentation/git-interpret-trailers.txt

@@ -123,7 +123,7 @@ trailer.ifexists::
 	same <token> in the message.
 +
 The valid values for this option are: `addIfDifferentNeighbor` (this
-is the default), `addIfDifferent`, `add`, `overwrite` or `doNothing`.
+is the default), `addIfDifferent`, `add`, `replace` or `doNothing`.
 +
 With `addIfDifferentNeighbor`, a new trailer will be added only if no
 trailer with the same (<token>, <value>) pair is above or below the line